There are 9 US Post Offices in Marshall County serving a total of 86,258 residents equating to 9,584 residents per post office. It's estimated that approximately 137,677 packages are handled across the 9 county post offices annually. Marshall County is a county of the U.S. state of Alabama. As of the 2010 census the population was 93,019. Its county seat is Guntersville. A second courthouse is in Albertville. Its name is in honor of John Marshall, famous Chief Justice of the United States. Marshall County is a dry county, with the exception of the four cities of Albertville, Arab, Guntersville, and Boaz. Marshall County comprises the Albertville, AL Micropolitan Statistical Area, which is also included in the Huntsville-Decatur-Albertville, AL Combined Statistical Area."